The Collaborative International Dictionary of English v.0.48:

Solute \So*lute"\, a. [L. solutus, p. p. of solvere to loosen.
   See Solve.]
   1. Loose; free; liberal; as, a solute interpretation. [Obs.]
      --Bacon.
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   2. Relaxed; hence; merry; cheerful. [R.]
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            A brow solute, and ever-laughing eye. --Young.
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   3. Soluble; as, a solute salt. [Obs.]
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   4. (Bot.) Not adhering; loose; -- opposed to adnate; as, a
      solute stipule.
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The Collaborative International Dictionary of English v.0.48:

Solute \So*lute"\, v. t.
   1. To dissolve; to resolve. [Obs.]
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   2. To absolve; as, to solute sin. [Obs.] --Bale.
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WordNet (r) 3.0 (2006):

solute
    n 1: the dissolved matter in a solution; the component of a
         solution that changes its state